package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServicelmpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        List<Category> categoryList = categoryMapper.page(categoryPageQueryDTO);
        Page<Category> p = (Page)categoryList;
        return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    public void add(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        /*category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());*/
        category.setStatus(StatusConstant.ENABLE);
        categoryMapper.insert(category);
    }

    @Override
    public void deleteById(Long id) {
        //判断当前分类是否关联了菜品，如果已经关联，则无法删除该分类
        int count = dishMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //判断当前分类是否关联了套餐，如果已经关联，则无法删除该分类
        count = setmealMapper.countByDishId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }

    @Override
    public void updateById(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        /*category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());*/
        categoryMapper.updateById(category);
    }

    @Override
    public List<Category> list(Integer type) {
        List<Category> list = categoryMapper.list(type);
        return list;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        categoryMapper.startOrStop(status,id);
    }
}
